Version 3.8.4
Performance improvements for large Smi-only arrays.
Fixed InternalArrays construction. (issue 1878)
git-svn-id: http://v8.googlecode.com/svn/trunk@10314 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
diff --git a/src/objects-inl.h b/src/objects-inl.h
index 7c7f094..99a0bb0 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -1219,7 +1219,7 @@
map != heap->free_space_map()) {
for (int i = 0; i < fixed_array->length(); i++) {
Object* current = fixed_array->get(i);
- ASSERT(current->IsSmi() || current == heap->the_hole_value());
+ ASSERT(current->IsSmi() || current->IsTheHole());
}
}
}
@@ -1290,22 +1290,37 @@
}
-void JSObject::set_elements(FixedArrayBase* value, WriteBarrierMode mode) {
+void JSObject::set_map_and_elements(Map* new_map,
+ FixedArrayBase* value,
+ WriteBarrierMode mode) {
+ ASSERT(value->HasValidElements());
+#ifdef DEBUG
+ ValidateSmiOnlyElements();
+#endif
+ if (new_map != NULL) {
+ if (mode == UPDATE_WRITE_BARRIER) {
+ set_map(new_map);
+ } else {
+ ASSERT(mode == SKIP_WRITE_BARRIER);
+ set_map_no_write_barrier(new_map);
+ }
+ }
ASSERT((map()->has_fast_elements() ||
map()->has_fast_smi_only_elements()) ==
(value->map() == GetHeap()->fixed_array_map() ||
value->map() == GetHeap()->fixed_cow_array_map()));
ASSERT(map()->has_fast_double_elements() ==
value->IsFixedDoubleArray());
- ASSERT(value->HasValidElements());
-#ifdef DEBUG
- ValidateSmiOnlyElements();
-#endif
WRITE_FIELD(this, kElementsOffset, value);
CONDITIONAL_WRITE_BARRIER(GetHeap(), this, kElementsOffset, value, mode);
}
+void JSObject::set_elements(FixedArrayBase* value, WriteBarrierMode mode) {
+ set_map_and_elements(NULL, value, mode);
+}
+
+
void JSObject::initialize_properties() {
ASSERT(!GetHeap()->InNewSpace(GetHeap()->empty_fixed_array()));
WRITE_FIELD(this, kPropertiesOffset, GetHeap()->empty_fixed_array());